# PERFORMANCE Track Intervals with Mark the Run Coach

> We have 2 types track interval sessions - this is Our PERFORMANCE variation which is all about education, running form observations and of course running intensity & purpose. We cap numbers to just 15 participants to keep the group small enough to get more of your coaches attention. If you want larger running groups with tons of good energy, great vibes and opportunities for connection then our COMMUNITY Track Intervals variation is for you as we cap the participation numbers at a pretty large group - 50 People. Track Intervals is Stride Society's dedicated running performance session, designed to help runners improve speed, efficiency and confidence through structured interval training. Every session is coach-led and built around proven training principles, giving runners the opportunity to develop pacing awareness, running economy and race-specific fitness in a supportive and motivating environment. Whether you're preparing for your first 5K or chasing a marathon personal best, our coaches will help you understand how to train smarter, execute each session with purpose and progressively unlock your athletic potential. All abilities are welcome, with pace groups and interval targets designed to ensure every runner is challenged at an appropriate level.

- Host: Mark the Run Coach
- Duration: 60 min
- Location: Gold Coast Performance Centre, 1 Sports Dr, Runaway Bay, QLD, 4216
- Host time zone: Australia/Brisbane
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://immrsvcoaching.cal.com/mark/performance-intervals
- Event type id: 397885

## Check availability

```http
GET https://api.cal.eu/v2/slots?eventTypeId=397885&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.eu/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 397885,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "Is-this-your-first-Stride-Society-PERFORMANCE-session": "…",
    "Which-best-describes-your-current-training-experience": "…",
    "Which-best-describes-where-you-are-on-your-running-journey": "…",
    "Is-there-anything-you-d-like-the-run-leaders-to-know-before-the-session": "…",
    "I-confirm-that-I-have-read--understood-and-signed-the-IMMRSV-Running-Waiver-and-acknowledge-the-risks-associated-with-participating-in-this-activity": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `attendeePhoneNumber` (Phone number), `Is-this-your-first-Stride-Society-PERFORMANCE-session` (Is this your first Stride Society PERFORMANCE session?), `Which-best-describes-your-current-training-experience` (Which best describes your current training experience?), `Which-best-describes-where-you-are-on-your-running-journey` (Which best describes where you are on your running journey?), `Is-there-anything-you-d-like-the-run-leaders-to-know-before-the-session` (Is there anything you'd like the run leaders to know before the session?), `I-confirm-that-I-have-read--understood-and-signed-the-IMMRSV-Running-Waiver-and-acknowledge-the-risks-associated-with-participating-in-this-activity` (I confirm that I have read, understood and signed the IMMRSV Participation Waiver (link below) and acknowledge the risks associated with participating in any IMMRSV activity. [https://forms.gle/v8ZMbWaDDCdBRHSZA](https://forms.gle/v8ZMbWaDDCdBRHSZA))
- Optional fields: none
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.